I have the same issues on my servers.
It started when i enabled DANE. If i disable DANE there is no issue.
Most of the servers work without problems, but there are a number of servers causing issues.
Some examples:
2023-01-27 14:26:09 TLS error on connection from olivia1.hostnet.nl [91.184.19.52] (SSL_accept): error:14094418:SSL routines:ssl3_read_bytes:tlsv1 alert unknown ca
2023-01-27 14:34:45 TLS error on connection from mx1.plinq.nl [193.239.186.69] (SSL_accept): error:14094418:SSL routines:ssl3_read_bytes:tlsv1 alert unknown ca
Should be nice if someone knows a solution.
